Report Description

This report, much like our original certs and CAs report, focuses on issuers of SSL enabling certificates found on web servers. Unlike our original report, however, this report has a couple of key differences to it:

• Reports on top 100 CAs. The original report only paid attention to the major CAs at the time the report was produced. This report lists the top 100 CAs for the month. You will find here many self-signing organizations such as universities, telecommunications firms, etc.
• Uses issuer name as identifier. Our original report only counted a certificate towards an organization if we were able to prove, by virtue of verifying the key, that the organization in question actually signed the certificate. This had a notable problem with it - we don't always have the public key of the CA. In at least one case, a CA doesn't make their public key available unless you sign a license agreement.

  This report doesn't have that problem, since it doesn't verify the signatures of the certificates it finds, it only uses the issuer Organization Name to uniquely identify the issuing CA.

CA	April 2023 Count	April 2023 %	March 2023 Count	March 2023 %	Growth %
Let's Encrypt	1,193,311	33.08	1,283,755	34.61	-4.42
Sectigo Limited	450,942	12.50	450,179	12.14	3.00
DigiCert	296,139	8.21	305,288	8.23	-0.25
GlobalSign nv-sa	220,010	6.10	219,726	5.92	2.96
Unknown	150,976	4.19	152,117	4.10	2.06
Amazon	134,505	3.73	140,468	3.79	-1.54
DigiCert, Inc.	115,406	3.20	113,216	3.05	4.82
Google Trust Services LLC	111,118	3.08	110,226	2.97	3.66
GoDaddy.com, Inc.	97,269	2.70	98,938	2.67	1.09
cPanel, Inc.	68,214	1.89	69,928	1.89	0.31
Plesk	64,776	1.80	64,705	1.74	2.94
SomeOrganization	57,506	1.59	57,365	1.55	3.08
Cloudflare, Inc.	50,257	1.39	49,802	1.34	3.77
ddos-guard	40,996	1.14	39,516	1.07	6.68
Unizeto Technologies S.A.	26,420	0.73	26,424	0.71	2.81
Internet Widgits Pty Ltd	25,657	0.71	25,752	0.69	2.45
GEANT Vereniging	25,048	0.69	25,272	0.68	1.92
TrustAsia Technologies, Inc.	24,866	0.69	24,128	0.65	5.97
GoGetSSL	21,590	0.60	21,276	0.57	4.35
SH	21,399	0.59	21,159	0.57	4.00
COMODO CA Limited	19,071	0.53	18,515	0.50	5.92
Soluciones Corporativas IP, SL	17,657	0.49	17,549	0.47	3.46
Japan Registry Services Co., Ltd.	17,537	0.49	17,575	0.47	2.61
Gandi	15,677	0.43	15,675	0.42	2.84
Apache HTTP Server	15,524	0.43	15,532	0.42	2.78
Starfield Technologies, Inc.	15,191	0.42	15,587	0.42	0.22
Internet2	14,778	0.41	15,027	0.41	1.13
Parallels	13,320	0.37	13,781	0.37	-0.61
ZeroSSL	12,092	0.34	10,445	0.28	19.04
Odin	10,559	0.29	11,231	0.30	-3.32
Beijing Knownsec Information Technology Co., Ltd	10,226	0.28	10,037	0.27	4.77
Microsoft Corporation	9,947	0.28	9,887	0.27	3.45
Default Company Ltd	9,892	0.27	9,650	0.26	5.41
Entrust, Inc.	9,604	0.27	9,804	0.26	0.73
SECOM Trust Systems CO.,LTD.	8,601	0.24	8,625	0.23	2.54
XX	7,039	0.20	7,218	0.19	0.28
dhosting.pl Sp. z o.o.	6,402	0.18	6,296	0.17	4.56
KAGOYA-JAPAN	5,969	0.17	6,011	0.16	2.11
Unspecified	5,401	0.15	5,317	0.14	4.45
Mirohost	4,699	0.13	4,689	0.13	3.05
none	4,647	0.13	4,815	0.13	-0.76
Cybertrust Japan Co., Ltd.	4,644	0.13	4,646	0.13	2.78
Beijing Xinchacha Credit Management Co., Ltd.	4,462	0.12	4,154	0.11	10.45
FASTVPS	4,344	0.12	4,291	0.12	4.10
CloudFlare, Inc.	4,128	0.11	4,153	0.11	2.21
WoTrus CA Limited	3,914	0.11	3,637	0.10	10.66
Alpiro s.r.o.	3,864	0.11	3,883	0.10	2.33
GeoTrust Inc.	3,851	0.11	3,898	0.11	1.59
Network Solutions L.L.C.	3,679	0.10	4,091	0.11	-7.53
Webgarden	3,661	0.10	3,650	0.10	3.14
DivMulTech LLC	3,568	0.10	3,562	0.10	3.00
Hotel.cz	3,308	0.09	3,307	0.09	2.86
DOMENY.PL sp. z o.o	3,208	0.09	3,173	0.09	3.96
My Company Ltd	3,167	0.09	3,133	0.08	3.95
SSL Server	3,146	0.09	3,146	0.08	2.83
Guardian Inc.	3,028	0.08	3,031	0.08	2.73
home.pl S.A.	3,027	0.08	3,195	0.09	-2.58
SSL Corporation	2,952	0.08	2,890	0.08	5.04
Digital Element	2,689	0.07	2,690	0.07	2.79
Buypass AS-983163327	2,529	0.07	2,427	0.07	7.15
FASTPANEL	2,472	0.07	2,422	0.07	4.95
SmugMug	2,311	0.06	2,293	0.06	3.64
cndns	2,242	0.06	2,220	0.06	3.85
Acme Co	2,206	0.06	2,125	0.06	6.75
TAIWAN-CA	2,186	0.06	2,153	0.06	4.41
CentOS Web Panel	2,076	0.06	2,103	0.06	1.51
Dattatec.com	2,003	0.06	1,951	0.05	5.57
Verein zur Foerderung eines Deutschen Forschungsnetzes e. V.	1,973	0.05	2,094	0.06	-3.11
Actalis S.p.A.	1,844	0.05	1,864	0.05	1.73
testexample	1,822	0.05	1,698	0.05	10.34
Rede Nacional de Ensino e Pesquisa - RNP	1,800	0.05	1,754	0.05	5.53
Kloxo Next Generation	1,765	0.05	1,554	0.04	16.79
The Trustico Group Ltd	1,651	0.05	1,602	0.04	5.97
Comodo Japan, Inc.	1,557	0.04	1,736	0.05	-7.77
ZONER Software, a.s.	1,535	0.04	1,510	0.04	4.53
Trust Provider B.V.	1,430	0.04	1,447	0.04	1.62
Skok.CZ	1,328	0.04	1,317	0.04	3.69
MyCompany	1,090	0.03	1,077	0.03	4.07
GeoTrust, Inc.	1,084	0.03	1,152	0.03	-3.24
RunCloud Sdn. Bhd.	1,075	0.03	1,009	0.03	9.56
Corporation Service Company	1,010	0.03	1,018	0.03	2.02
Bitrix	987	0.03	1,046	0.03	-2.97
TERENA	973	0.03	1,033	0.03	-3.14
Trustwave Holdings, Inc.	956	0.03	1,030	0.03	-4.56
N/A	943	0.03	970	0.03	-0.03
Zhejiang Huluwa Digital Certification Co., Ltd.	940	0.03	0	0.00	N/A
SecureCore	926	0.03	914	0.02	4.18
Hoster	911	0.03	889	0.02	5.37
Unnamed company	886	0.02	875	0.02	4.12
NetLock Kft.	873	0.02	950	0.03	-5.51
GTranslate	864	0.02	842	0.02	5.52
E-TUGRA EBG BILISIM TEKNOLOJILERI VE HIZMETLERI ANONIM SIRKETI	860	0.02	861	0.02	2.71
Brainy	855	0.02	858	0.02	2.47
Traffic	774	0.02	0	0.00	N/A
BiziNet Pty Ltd	762	0.02	761	0.02	2.96
zzidc.com	761	0.02	770	0.02	1.63
StartCom Ltd.	761	0.02	751	0.02	4.20
QuoVadis Limited	753	0.02	778	0.02	-0.48
sslTrus	736	0.02	697	0.02	8.58
Bitnami	727	0.02	745	0.02	0.34

Note: Readers are cautioned that the Growth percentages are based on a CA's market share penetration rather than the absolute number of certificates we detected. Thus, it is possible for the number of certificates to increase, while the growth is actually a negative value.